OrangeCheck, sybil resistance from a Bitcoin signature

OrangeCheck launches a suite of identity and sybil-resistance tools built on Bitcoin signatures, using BIP-322 to verify address ownership without transactions, custody, or KYC. The open-source, MIT-licensed protocols include attestation, encryption, voting, stamping, agent authorization, and pledging, all anchored to a single Bitcoin address.

orangecheck // identity, on bitcoin You already have an account.It's your Bitcoin address — claim it identity Sign one message to prove the address you already control — BIP-322, never a transaction. No password, no KYC, no custody. ✓ bip-322 identity✓ offline-verifiable✓ no custody · no KYC · no permission § the family One signing primitive, composed nine ways. Each is independent — its own spec, its own site — and shares the same Bitcoin address as identity. protocolsopen spec · MIT oc·attestsybil resistance · proof of bitcoin stake https://attest.ochk.io oc·lockend-to-end encryption, addressed to a bitcoin address https://lock.ochk.io oc·votestake-weighted, sybil-resistant polls https://vote.ochk.io oc·stampbitcoin-block-anchored signed statements https://stamp.ochk.io oc·agentscoped, revocable authority for agents https://agent.ochk.io oc·pledgebonded commitments, verified by anyone https://pledge.ochk.io productscommercial · bitcoin-bonded § open protocol, forever No token, no issuer, no custody. Every artifact is a signed JSON envelope anyone can verify with a Bitcoin node and a BIP-322 verifier — shut us down tomorrow and your identity still checks out. § start One Bitcoin identity. Six protocols. Three products. Open and MIT-licensed — read the spec, or claim your address and open the dashboard.